21489351

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{2797}}^1$

素因数の和:3010

約数の個数: 16

約数和(自身を含む): 31024224

約数和(自身を除く): 9534873

約数列:

[1, 3, 13, 39, 197, 591, 2561, 2797, 7683, 8391, 36361, 109083, 551009, 1653027, 7163117, 21489351]

約数ペア:

[(1, 21489351), (3, 7163117), (13, 1653027), (39, 551009), (197, 109083), (591, 36361), (2561, 8391), (2797, 7683)]